Forum der Gemeinschaft Firefox

Windows Defender is blocking Yandex.Ru, which is not even been tried to be access from. It showed in the Event Viewer that firefox.exe tried to reach Yandex.ru. Why is Firefox trying to reach there? There are no extensions apart from Firefox Multi-Account Containers installed.

Please advice.

Have tried different solutions like Malware product and cleaning cashe and cookies. When I search a known safe site I get redirect by Convertitmas stating the (known safe) site is unsafe. Best regards Henrik Nygaard

Device Bound Session Credentials

Google has made Device Bound Session Credentials (DBSC) generally available to all Windows users of its Chrome web browser.

What is FIREFOX doing to defend us from session cookie stealing malware (STORM)?

The title. I want to be able to browse while trusting a specific CA certificate, but have the option to browse without it as well. If there is no way to do it, is there a way to toggle whether Firefox trusts a CA without needing to reinstall it every time?

When the browser is open - whether with tabs or not - it disables NVIDIA ShadowPlay. The NVIDIA overlay says “a protected app is preventing desktop capture,” and I’d agree with that if it only happened when tabs with DRM content were open, but it happens even in an empty browser.

I had Credit card Ads before many times and I could at least block them and be able to get some peace but now they are using Firefox & Firefox is actually putting them in a place of being able to literally Stock me And message after message they use Firefox to get to me all day and night and I can't stop it it's been so brutal for me I already have been stocked by my ex boyfriend and it was so scary so horrible I have bad panic attacks and anxiety, PTSD, truly afraid and I can atleast be able to block them they get new # new w Everything by next day and I have to block them daily & sence getting Firefox I have just figured out it's Seriously @Firefox that's allowing and giving these horrible scammers & worst credit card companies saying whatever they want to mess with you on a daily bases & I just found out it's because of Firefox I can't block them and get any help they help these companies actually stock me worse then anyone or any place ever before and there supposed to be a security company to keep me safe my Google Reviews I have awards getting 100,000 views first month & awarded for people truly caring what I have to say and I can't let other wemon & victims be brutalized like I have been through the 1 company suppose to keep me safe it's heartbreaking and has effected me in such a bad way I'm scared and not okay now after what I been through in last 24 hrs even how could this be right or legal or okay at all

I assume Mozilla developers are working on this?

https://singularityhub.com/2026/04/10/anthropics-mythos-ai-uncovered-serious-security-holes-in-every-major-os-and-browser/

Quote from the article

"Its capabilities are a step change from the previous best models. Given the challenge of attacking the Firefox web browser’s JavaScript engine, Anthropic’s previous most powerful model Opus 4.6 succeeded just twice, compared to 181 times for Mythos. Most worryingly, the team found that engineers with no security background could use it to develop successful attacks overnight."

I just purchase Malwarebytes Standard plan to help strengthen the security of my laptop which runs on Windows 11 .After installing the standard plan, Malwarebytes recommended I install, for free, an add-on called Browser Guard for Firefox. However, Mozilla sent a cautionary statement: 'This add-on is not actively monitored for security by Mozilla. Make sure you trust it before installing.

Is the Malwarebytes Browser Guard for Firefox safe?